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H. E. STAGER.

STEAM RADIATOR ATTACHMENT.

No. 436,159. Patented Sept. 9, 1890.

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HENRY E. STAGER, OF MILWAUKEE, WISCONSIN, ASSIGNOR OF ONE-HALF TO JAMESE. WOODWORTH, OF SAME PLACE.

STEAM-RADIATOR ATTACHM ENT.

SPECIFICATION forming part of Letters Patent No. 436,159, datedSeptember 9, 1890.

Application filed March 10, 1890- Serlal No. 343,391. (No model.)

To all whom it may concern:

Be it known that I, HENRY E. 'STAGER, of Milwaukee, in the county ofMilwaukee, and in the State of Wisconsin, have invented certain new anduseful Improvements in Steam- Radiator Attachments; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof.

My invention relates to steam-radiator attachments; and it consists incertain peculiarities of construction and combination of parts, to behereinafter described with reference to the accompanying drawings, andsubsequently claimed.

In the drawings, Figure 1 represents a longitudinal vertical section ofmy device, the section being taken on line 1 1 of thesucceeding figure;Fig. 2, a vertical transverse section on line 2 2 of Fig. 1, and Fig. 3an end view of said device attached to a steamradiator.

Referring by letter to the drawings, A represents a portion of asteam-radiator, and fitted in an opening in one of the coils thereof isa hollow branch I) at the bottom of a shell B, the latter being providedat one end with a removable cap 0 to facilitate access to the interiorthereof. Screw-threaded or otherwise suitably secured tothe top of theshell B is a casting 0, having a transverse partition d, provided withan opening e for the escape of air expelled from the radiator when steamis admitted thereto.

Fitted to the casting 0, above the partition d, is a thimble D, having adetachable cap f, and this thimble inoloses a plug E of expansiblematerial opposed to the opening 6 in said partition. The thimble D isprovided with an air-escape opening g. The upper end of the casting C ispreferably in the form of a cup-shaped flange h, and it is alsopreferable to have a pipe t run from the top of the shell B to one ofthe radiator-coils, the latter terminus of the pipe being above thebranch I) of said shell.

Secured to the inner side of the bottom of the shell B by means of ascrew j is a plate F, provided with a standard It, and fulcrumed to thisstandard is an irregular-shaped lever G,

having its long arm provided with a float m,

the latter being preferably of soapstone or other suitable material in asolid form detachably connected to said arm of the lever.

The short arm of the lever is provided with a counter-weight n for thefloat, and pivotally connected to the lever between the float andcounter-weight is a rod-valve H for the opening e in the partition (I ofthe castingO, the normal position of said lever and rodvalve being bestillustrated in Fig. 1. When steam is let onto the radiator, the air inthe latter is forced out through the attachment above described, thefinal outlet being through the opening g in the thimble D, and theexpansion of the plug E, due to heat, closes the opening 6 in thepartition (1 of the casting O to prevent the escape of steam after theair has been expelled, the cup-shaped flange h on said casting servingto arrest the drip caused by condensation of escaping steam prior to theautomatic action of said plug. If from any cause the radiator fills withwater, the latter will rise in the shell B of my attachment, and actingon the float m will move the lever G on its fulcrum to seat the rodvalveH and thus close the opening 6 in the partition 01 of the casting O, tothereby efiectually prevent any of the water from escaping into theapartmentin which said radiator may be located, this being the principalobject of my invention. When water is drawn off from the radiator, areverse operation to that just described takes place and the rodvalve Hwill be unseated as the float m on the lever G is lowered, the emptyingof the shell B being made certain by the pressure of steam admittedthrough the pipe t', that connects the top thereof with said radiator.

By the construction and operation above described it will be seen thatno Water can flow from the radiator in case the latter is flooded, andthus I obviate the damage and annoyance heretofore experienced withsteamradiators because of the lack of some means for automaticallyclosing the air-escape openings when flooding occurs.

I am aware that an expansion-valve for closing the air-escape opening ina radiator against the escape of steam is not new, and I lay no broadclaim to the one shown, attention being called to the fact that theentire attachment, as shown, is designed for a new radiator; but if usedin connection with an old device of this character the thimble I) andthe expansion-plug E may be omitted and the expansion-valve belonging tothe latter radiator substituted.

The general construction above described is the one preferred; but asthe same result may be accomplished by various forms of the attachmentwithout departure from the spirit of my invention I do not Wish to beunderstood as limiting myself to the one shown.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. An attachment for steam-radiators, that comprises a shell having anair-escape opening, a standard arranged Within the shell, acounterbalanced float-controlled lever f ulcrumed to the standard, and arod-valve connected to the lever in opposition to the air-escapeopening, substantially as set forth.

2. An attachment for steam-radiators, that comprises a shell having thelower portion thereof provided with a fitting for connection with aradiator-coil, an air-escape opening in the shell, a float-controlledvalve arranged within said shell to oppose the air-escape opening, and apipe for connecting the upper portion of the aforesaid shell with theradiator at a point above said fitting, substantially as set forth.

3. An attachment for steam-radiators, that comprises a shell having anair-escape opening, a plate detaehably connected to the in ner side ofthe shell bottom and provided with a standard, an irreg ular-shapedlever f ulcrumed to the standard, a float and counterweight carried onopposite ends of the lever, and a rod-valve pivoted to said lever inopposition to the air-escape opening in said shell, substantially as setforth.

4. An attachment for steam-radiators, that comprises a shell having anair-escape opening, a standard arranged Within the shell, acounterbalanced float-controlled lever fulcrumed to the standard, arod-valve connected to the lever in opposition to the air-escapeopening, and an expansion-valve supported on said shell to also opposesaid air-escape opening, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, atMilwaukee, in the county of Milwaukee and State of VVisconsin, in thepresence of two Witnesses.

HENRY E. STAGER.

\Vitnesses:

N. E. OLIPHANT, WM. KLUG.

